
    <!DOCTYPE html>
    <html lang="zh-CN">
    <head>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <title>1、SpringBoot启动流程 - 交互式测验</title>
      <style>
        @import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap');
        
        body {
          font-family: 'Noto Sans SC', sans-serif;
          background-color: #f4f7f9;
          color: #333;
          display: flex;
          justify-content: center;
          align-items: center;
          min-height: 100vh;
          margin: 0;
          padding: 20px;
          box-sizing: border-box;
        }
        
        .main-wrapper {
            position: relative;
            width: 100%;
            max-width: 900px; /* Wider to accommodate buttons */
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .quiz-container {
          background-color: #ffffff;
          border-radius: 16px;
          box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
          width: 100%;
          max-width: 700px;
          overflow: hidden;
          z-index: 10;
        }

        .quiz-header {
          background-color: #4a90e2;
          color: white;
          padding: 20px 30px;
          text-align: center;
        }

        .quiz-header h1 {
          margin: 0;
          font-size: 24px;
          font-weight: 700;
        }
        
        .quiz-header p {
            margin: 5px 0 0;
            font-size: 14px;
            opacity: 0.9;
        }

        .quiz-body {
          padding: 30px;
        }

        .progress-bar {
            display: none; /* 隐藏进度条 */
            width: 100%;
            background-color: #e0e0e0;
            border-radius: 5px;
            height: 10px;
            margin-bottom: 20px;
        }

        #progress-indicator {
            height: 100%;
            width: 0%;
            background-color: #4caf50;
            border-radius: 5px;
            transition: width 0.3s ease;
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        #question-container {
          margin-bottom: 20px;
        }

        #question-text {
          font-size: 18px;
          font-weight: 500;
          line-height: 1.6;
          margin-bottom: 25px;
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        .options-list {
          list-style: none;
          padding: 0;
          margin: 0;
        }

        .option-item {
          background-color: #f8f9fa;
          border: 1px solid #dee2e6;
          border-radius: 8px;
          padding: 15px;
          margin-bottom: 12px;
          cursor: pointer;
          transition: background-color 0.2s ease, border-color 0.2s ease;
        }

        .option-item:hover {
          background-color: #e9ecef;
        }
        
        .option-item.selected {
            background-color: #d1e7fd;
            border-color: #4a90e2;
        }

        .quiz-footer {
          padding: 20px 30px;
          display: flex;
          justify-content: space-between; /* 将按钮分布在两侧 */
          align-items: center;
          min-height: 65px; /* Reserve space */
        }

        .nav-btn {
          background-color: #4a90e2;
          color: white;
          border: none;
          border-radius: 8px;
          padding: 10px 20px;
          font-size: 16px;
          font-weight: 500;
          cursor: pointer;
          transition: background-color 0.2s ease, transform 0.2s ease;
          box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        }
        
        #next-btn {
            background-color: #28a745;
        }

        .nav-btn:hover {
          background-color: #357abd;
          transform: scale(1.05);
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        .nav-btn:disabled {
            background-color: #a0c3e8;
            cursor: not-allowed;
            opacity: 0.7;
        }

        #result-container {
            border-top: 1px solid #eee;
        }
        
        .result-box {
            border-radius: 8px;
            padding: 20px;
            margin-top: 20px;
        }
        
        .result-box.correct {
            background-color: #d4edda;
            border: 1px solid #c3e6cb;
            color: #155724;
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        .result-box.incorrect {
            background-color: #f8d7da;
            border: 1px solid #f5c6cb;
            color: #721c24;
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        .result-box h3 {
            margin-top: 0;
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        .explanation-text {
            margin-top: 15px;
            line-height: 1.7;
        }
        
        .source-text {
            font-style: italic;
            font-size: 14px;
            margin-top: 15px;
            color: #555;
        }

        
        .final-score-container {
            padding: 40px;
            text-align: center;
        }
        .final-score-container h2 {
            margin-top: 0;
            margin-bottom: 30px;
        }
        .score-summary {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .score-card {
            background-color: #f8f9fa;
            border-radius: 12px;
            padding: 20px;
            width: 180px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            border: 1px solid #e9ecef;
        }
        .score-card h3 {
            margin: 0 0 10px;
            font-size: 16px;
            font-weight: 500;
            color: #555;
        }
        .score-card p {
            margin: 0;
            font-size: 28px;
            font-weight: 700;
            color: #333;
        }
        .score-details table {
            width: 100%;
            font-size: 16px;
        }
        .score-details td {
            padding: 4px 0;
        }
        .score-details td:last-child {
            text-align: right;
            font-weight: 700;
        }
        .report-actions button {
            background-color: #fff;
            border: 1px solid #ccc;
            border-radius: 8px;
            padding: 12px 25px;
            font-size: 16px;
            cursor: pointer;
            margin: 0 10px;
            transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
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        .report-actions button:hover {
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            transform: translateY(-2px);
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        .report-actions button.primary {
            background-color: #28a745;
            color: white;
            border-color: #28a745;
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        .report-actions button.primary:hover {
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        .hint-container {
            background-color: #e0f7fa;
            border: 1px solid #b2ebf2;
            border-radius: 8px;
            padding: 15px;
            margin-top: 20px;
            color: #006064;
            font-size: 15px;
            line-height: 1.6;
            display: none; /* 默认隐藏 */
        }
      </style>
    </head>
    <body>
      <div class="main-wrapper">
          <div class="quiz-container">
            <div class="quiz-header">
              <h1>1、SpringBoot启动流程 - 交互式测验</h1>
              <p>检验你对文档内容的理解程度</p>
            </div>
            <div id="quiz-content">
                <div class="quiz-body">
                    <div class="progress-bar">
                        <div id="progress-indicator"></div>
                    </div>
                    <div id="question-container">
                      <p id="question-text"></p>
                      <ul class="options-list" id="options-list"></ul>
                    </div>
                    <div id="result-container"></div>
                    <div id="hint-container" class="hint-container"></div>
                </div>
                <div class="quiz-footer" id="quiz-footer">
                  <button id="prev-btn" class="nav-btn">上一题</button>
                  <button id="hint-btn" class="nav-btn" style="background-color: #ffc107; color: #333; box-shadow: 0 4px 12px rgba(255,193,7,0.3);">提示</button>
                  <button id="next-btn" class="nav-btn">下一题</button>
                </div>
            </div>
          </div>
      </div>

      <script>
        const quizData = [
  {
    "question": "根据文档，`SpringApplication` 类的核心职责是什么？",
    "options": [
      "只负责管理 Spring Bean 的生命周期和依赖注入。",
      "启动 Spring 应用，封装了创建应用上下文、启动自动配置和运行嵌入式服务器等过程。",
      "专门用于解析和处理 `application.properties` 配置文件。",
      "提供 Web 应用的路由和请求处理功能。"
    ],
    "correctAnswerIndex": 1,
    "explanation": "`SpringApplication` 是 Spring Boot 的核心启动类，它的主要职责是引导和启动整个 Spring 应用程序。这包括创建和配置应用上下文（`ApplicationContext`）、触发自动配置、以及根据需要启动嵌入式 Web 服务器等一系列复杂的初始化操作。",
    "source": "文档中「1. SpringApplication 类概述」部分",
    "hint": "文档开头就对这个类的核心职责进行了总结，提到它“封装了应用的启动过程...”。"
  },
  {
    "question": "在 `SpringApplication.run()` 方法的执行流程中，哪一步负责创建和初始化 Spring 环境，包括加载 `application.properties` 等配置文件？",
    "options": [
      "createApplicationContext()",
      "refreshContext(context)",
      "prepareEnvironment(listeners, args)",
      "getRunListeners(args)"
    ],
    "correctAnswerIndex": 2,
    "explanation": "`prepareEnvironment()` 方法是专门用来创建和准备 `ApplicationEnvironment` 的。在这个阶段，Spring Boot 会加载各种配置源，如系统属性、环境变量以及 `application.properties` 或 `application.yml` 文件，并将它们整合到 `Environment` 对象中，供后续步骤使用。",
    "source": "文档中「run() 方法源码分析」部分下的「设置环境变量，加载配置」",
    "hint": "在 `run()` 方法的源码分析中，寻找与“环境 (Environment)”和“配置”相关的步骤。"
  },
  {
    "question": "根据文档描述，`createApplicationContext()` 方法是如何决定创建哪种类型的 `ApplicationContext` 的？",
    "options": [
      "总是创建 `GenericWebApplicationContext`，因为 Spring Boot 主要用于 Web 开发。",
      "根据应用的 `webApplicationType` 判断，Web 应用创建 `GenericWebApplicationContext`，非 Web 应用则创建 `AnnotationConfigApplicationContext`。",
      "通过检查主类上是否有 `@RestController` 注解来判断。",
      "通过检查 `pom.xml` 中是否存在 `spring-boot-starter-web` 依赖来决定。"
    ],
    "correctAnswerIndex": 1,
    "explanation": "文档中的代码片段明确展示了 `createApplicationContext()` 方法的内部逻辑：它会检查 `this.webApplicationType` 的值。如果类型是 `WebApplicationType.NONE`，则创建 `AnnotationConfigApplicationContext`；否则，对于 Web 应用，会创建相应的 Web 应用上下文，如 `GenericWebApplicationContext`。",
    "source": "文档中「run() 方法源码分析」部分下的「创建应用上下文」",
    "hint": "文档中的代码示例直接揭示了基于 `webApplicationType` 的条件判断逻辑。"
  },
  {
    "question": "在 Spring Boot 的启动流程中，`refreshContext(context)` 这一步的关键作用是什么？",
    "options": [
      "创建 `ApplicationContext` 实例，但并不进行初始化。",
      "仅仅是用来刷新配置文件，使其重新加载。",
      "启动 Spring 容器，加载所有 Bean 定义，并完成依赖注入和生命周期管理。",
      "执行所有 `SpringApplicationRunListener` 注册的启动后操作。"
    ],
    "correctAnswerIndex": 2,
    "explanation": "`refreshContext(context)` 实际上是调用了 Spring 容器的 `refresh()` 方法，这是整个 Spring IoC 容器初始化的核心。在这一步，容器会解析配置、实例化所有单例 Bean、处理 `@Autowired` 等依赖注入、并调用各种生命周期回调方法，标志着应用程序的核心服务已经准备就绪。",
    "source": "文档中「run() 方法源码分析」部分下的「刷新上下文」",
    "hint": "这一步是 Spring 容器真正“活”起来的阶段，涉及到 Bean 的加载和管理。"
  },
  {
    "question": "文档是如何描述 `SpringApplication` 和 `ApplicationContext` 之间关系的？",
    "options": [
      "它们是同一个类的不同别名，功能完全相同。",
      "`SpringApplication` 是一个启动引导类，其主要职责是创建和配置 `ApplicationContext`；而 `ApplicationContext` 是实际管理 Bean 的 Spring 容器。",
      "`ApplicationContext` 负责启动 `SpringApplication`。",
      "`SpringApplication` 是 `ApplicationContext` 的一个子接口，专用于 Web 环境。"
    ],
    "correctAnswerIndex": 1,
    "explanation": "文档明确区分了二者的角色：`SpringApplication` 是一个高层的“引导者”或“启动器”，它负责准备好一切所需的环境和配置，然后创建并启动 `ApplicationContext`。一旦 `ApplicationContext` 被启动（通过 `refresh()`），它就接管了应用程序中所有 Bean 的生命周期管理。",
    "source": "文档中「5. SpringApplication 与 SpringApplicationContext 的关系」部分",
    "hint": "思考一下，哪一个是“启动器”，哪一个是“容器”？文档的最后一节专门讨论了这个问题。"
  },
  {
    "question": "在 `SpringApplication` 的构造方法中，传入的 `primarySource` (主类) 主要用途是什么？",
    "options": [
      "指定嵌入式 Web 服务器的端口号。",
      "定义应用可以接收的命令行参数。",
      "作为应用的主要配置源，用于构建应用上下文。",
      "仅用于在日志中打印应用名称。"
    ],
    "correctAnswerIndex": 2,
    "explanation": "构造方法接收的 `primarySource`（通常是带有 `@SpringBootApplication` 注解的类）被视为 Spring 配置的起点。`SpringApplication` 会使用这个类来定位组件扫描的基包（base-package）和其他配置信息，从而正确地构建和初始化 `ApplicationContext`。",
    "source": "文档中「2. SpringApplication 的关键构造方法」部分",
    "hint": "文档中提到 `primarySource` 和 `sources` 都是用于构建应用上下文的基础。"
  },
  {
    "question": "在 `SpringApplication.run()` 方法的诸多步骤中，哪一步标志着 Spring Boot 自动配置机制开始生效，并根据条件注解加载所需的配置类？",
    "options": [
      "prepareEnvironment(listeners, args)",
      "listeners.starting()",
      "createApplicationContext()",
      "refreshContext(context)"
    ],
    "correctAnswerIndex": 3,
    "explanation": "虽然环境准备 (`prepareEnvironment`) 加载了配置文件，但自动配置的核心逻辑，即根据类路径上的依赖和现有配置来决定哪些 Bean 需要被创建，是在 `refreshContext()` 过程中发生的。这个阶段会处理 `@Import(AutoConfigurationImportSelector.class)`，扫描、解析并应用所有符合条件的自动配置类。",
    "source": "文档中「4. SpringApplication 启动流程的详细解析」部分下的「自动配置」和「刷新应用上下文」",
    "hint": "自动配置的最终目的是创建 Bean，而 Bean 的创建和初始化发生在容器的“刷新”阶段。"
  }
];
        console.log("Quiz Data:", JSON.parse(JSON.stringify(quizData))); // 添加这行用于调试，以可展开的JSON格式输出
        
        let currentQuestionIndex = 0;
        let score = 0;
        // 存储每个问题的回答状态
        const userAnswers = new Array(quizData.length).fill(null); 

        const questionTextEl = document.getElementById('question-text');
        const optionsListEl = document.getElementById('options-list');
        const resultContainerEl = document.getElementById('result-container');
        const quizContentEl = document.getElementById('quiz-content');
        const progressIndicatorEl = document.getElementById('progress-indicator');
        const prevBtn = document.getElementById('prev-btn');
        const nextBtn = document.getElementById('next-btn');
        const hintBtn = document.getElementById('hint-btn');
        const hintContainerEl = document.getElementById('hint-container');

        function loadQuestion() {
          resultContainerEl.innerHTML = '';
          optionsListEl.innerHTML = '';
          hintContainerEl.style.display = 'none'; // 隐藏提示
          
          if (currentQuestionIndex >= quizData.length) {
            showFinalScore();
            return;
          }

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          const currentQuestion = quizData[currentQuestionIndex];
          questionTextEl.textContent = `(${currentQuestionIndex + 1}/${quizData.length}) ${currentQuestion.question}`;
          
          currentQuestion.options.forEach((optionText, index) => {
            const li = document.createElement('li');
            li.className = 'option-item';
            li.textContent = optionText;
            li.dataset.index = index; // Store index in a data attribute
            // 如果这道题已经回答过，恢复状态
            if (userAnswers[currentQuestionIndex] !== null) {
                if (index === userAnswers[currentQuestionIndex]) {
                    li.classList.add('selected');
                }
            }
            optionsListEl.appendChild(li);
          });

          // 如果已经回答过，直接显示结果
          if (userAnswers[currentQuestionIndex] !== null) {
              const isCorrect = userAnswers[currentQuestionIndex] === currentQuestion.correctAnswerIndex;
              showResult(isCorrect, currentQuestion);
          }
          
          updateNavigationButtons();
          updateProgress();
        }

        function selectOption(optionIndex) {
            userAnswers[currentQuestionIndex] = optionIndex;
            const currentQuestion = quizData[currentQuestionIndex];
            const isCorrect = optionIndex === currentQuestion.correctAnswerIndex;

            // 重新计算分数
            score = userAnswers.reduce((acc, answer, index) => {
                return answer === quizData[index].correctAnswerIndex ? acc + 1 : acc;
            }, 0);

            showResult(isCorrect, currentQuestion);
            updateNavigationButtons();
        }
        
        function updateProgress() {
            const answeredQuestions = userAnswers.filter(answer => answer !== null).length;
            const progressPercentage = (answeredQuestions / quizData.length) * 100;
            progressIndicatorEl.style.width = `${progressPercentage}%`;
        }
        
        function updateNavigationButtons() {
            prevBtn.style.display = 'block';
            nextBtn.style.display = 'block';
            hintBtn.style.display = 'block'; // 显示提示按钮

            prevBtn.disabled = currentQuestionIndex === 0;
            nextBtn.disabled = false; // 最后一题时，下一题按钮不禁用，而是用于显示报告
            nextBtn.textContent = (currentQuestionIndex === quizData.length - 1) ? '查看报告' : '下一题';
            
            // 如果当前问题没有提示，则禁用提示按钮并隐藏提示内容
            if (!quizData[currentQuestionIndex].hint) {
                hintBtn.disabled = true;
                hintContainerEl.style.display = 'none';
                hintContainerEl.textContent = ''; // 清除旧的提示内容
            } else {
                hintBtn.disabled = false;
            }
        }

        function showResult(isCorrect, questionData) {
            resultContainerEl.innerHTML = ''; // 清空之前的结果
            const resultBox = document.createElement('div');
            resultBox.className = `result-box ${isCorrect ? 'correct' : 'incorrect'}`;
            
            let html = `<h3>${isCorrect ? '回答正确！' : '回答错误'}</h3>`;
            if (!isCorrect) {
                html += `<p><strong>正确答案是：</strong> ${questionData.options[questionData.correctAnswerIndex]}</p>`;
            }
            html += `<div class="explanation-text">${questionData.explanation}</div>`;
            html += `<div class="source-text">来源: ${questionData.source}</div>`;
            
            resultBox.innerHTML = html;
            resultContainerEl.appendChild(resultBox);

            // 禁用所有选项的点击事件，并高亮正确/错误答案
            Array.from(optionsListEl.children).forEach((child, index) => {
                child.style.pointerEvents = 'none';
                // 高亮正确答案
                if (index === questionData.correctAnswerIndex) {
                    child.classList.add('correct'); // 需要添加CSS样式
                    child.style.backgroundColor = '#d4edda';
                    child.style.borderColor = '#c3e6cb';
                }
                // 如果选错了，高亮错误选项
                if (!isCorrect && index === userAnswers[currentQuestionIndex]) {
                    child.classList.add('incorrect'); // 需要添加CSS样式
                    child.style.backgroundColor = '#f8d7da';
                    child.style.borderColor = '#f5c6cb';
                }
            });
        }

        function goToNextQuestion() {
            if (currentQuestionIndex < quizData.length - 1) {
                currentQuestionIndex++;
                loadQuestion();
            } else {
                showFinalScore();
            }
        }

        function goToPreviousQuestion() {
            if (currentQuestionIndex > 0) {
                currentQuestionIndex--;
                loadQuestion();
            }
        }
        
        function showHint() {
            const currentQuestion = quizData[currentQuestionIndex];
            if (currentQuestion.hint) {
                hintContainerEl.textContent = currentQuestion.hint;
                hintContainerEl.style.display = 'block';
            } else {
                hintContainerEl.style.display = 'none';
            }
        }

        function showFinalScore() {
            document.querySelector('.quiz-body').style.display = 'none';
            document.getElementById('quiz-footer').style.display = 'none';

            const correctCount = score;
            const totalQuestions = quizData.length;
            const answeredCount = userAnswers.filter(a => a !== null).length;
            const wrongCount = answeredCount - correctCount;
            const skippedCount = totalQuestions - answeredCount;
            const accuracy = totalQuestions > 0 ? Math.round((correctCount / totalQuestions) * 100) : 0;
            const errorRate = totalQuestions > 0 ? Math.round((wrongCount / totalQuestions) * 100) : 0;

            const finalScoreHtml =
                '<div class="final-score-container">' +
                '<h2>答题报告</h2>' +
                '<div class="score-summary">' +
                '<div class="score-card">' +
                '<h3>得分</h3>' +
                '<p>' + correctCount + ' / ' + totalQuestions + '</p>' +
                '</div>' +
                '<div class="score-card">' +
                '<h3>正确率</h3>' +
                '<p>' + accuracy + '%</p>' +
                '</div>' +
                '<div class="score-card">' +
                '<h3>错误率</h3>' +
                '<p>' + errorRate + '%</p>' +
                '</div>' +
                '<div class="score-card score-details">' +
                '<table>' +
                '<tr><td>正确</td><td>' + correctCount + '</td></tr>' +
                '<tr><td>错误</td><td>' + wrongCount + '</td></tr>' +
                '<tr><td>未答</td><td>' + skippedCount + '</td></tr>' +
                '</table>' +
                '</div>' +
                '</div>' +
                '<div class="report-actions">' +
                '<button id="review-btn">回顾测验</button>' +
                '<button class="primary" onclick="location.reload()">再试一次</button>' +
                '</div>' +
                '</div>';

            let reportEl = document.querySelector('.final-score-container');
            if (reportEl) {
                reportEl.remove();
            }
            quizContentEl.insertAdjacentHTML('beforeend', finalScoreHtml);
            document.getElementById('review-btn').addEventListener('click', reviewQuiz);
        }

        function reviewQuiz() {
            const reportEl = document.querySelector('.final-score-container');
            if (reportEl) {
                reportEl.remove();
            }

            document.querySelector('.quiz-body').style.display = 'block';
            document.getElementById('quiz-footer').style.display = 'flex';
            
            currentQuestionIndex = 0;
            loadQuestion();
            updateNavigationButtons(); // Ensure nav buttons are correctly displayed
        }

        // Event Delegation for options
        optionsListEl.addEventListener('click', (event) => {
            if (event.target && event.target.matches('li.option-item')) {
                // Check if the question has already been answered
                if (userAnswers[currentQuestionIndex] === null) {
                    const selectedIndex = parseInt(event.target.dataset.index, 10);
                    selectOption(selectedIndex);
                }
            }
        });

        prevBtn.addEventListener('click', goToPreviousQuestion);
        nextBtn.addEventListener('click', goToNextQuestion);
        hintBtn.addEventListener('click', showHint);
        
        // 初始加载
        loadQuestion();
      </script>
    </body>
    </html>
  